Nut-lock



J. M. PERRY.

NUT Loox.

Patentd Mahfy 8, 1883.

UNITED STATES PATENT OFFICE.

JAMES M. PERRY, 0F SHARON, PENNSYLVANIA.

NUT- LOOK.

SPEUIFIOATION forming part of Letters Patent No. 277,338, dated May 8,1'883. Application Bled February i9, 1881i. (No model.)

To all whom it may concern Be it known that I, JAMES M. Psnnr, ofSharon, in the county ot' Mercer and Stute ol' Pennsylvania, haveinvented certain new and nsel'nl Improvements in NutfL'ocks for Rail-Joiut's; and I do hereby declare that the following is u l'nli, cloni',and exact description of the invention, which will enable others skilledin the nrt to which it apperlnns to make and use the same, referencebeing had to the accompanying drawings, which form u. part of thisspecification, in which- Figure l is an isometricnl perspective nl onepart of n railway-rail joint wit-h my invention applied. Fig. 2 is nnend view ot' same. Fig. 3 shows the spring-washer in front und sideelevation. Fig. 4 shows e section of the ordinary ribbed tish-bnr withmy spring locking washer applied, ready for the bolt and nut.

This invention relates to nul'flocks, and is intended for use ourailway-ruil joints where the joint is mode by fislrplntes orsplice-hars held against the rnils by bolts und nuts.

The invention consists in the construction, combination, andarrnngeinent ns hereinafter set forth und claimed.

In the drawings, A designates the rail, and B the splice-bar ou the sideat which the nuts U nre applied. The other splicebnr, l), may be of anyform; but the bnr B is made of the channeled forn1-thntis, with nrib orshoulder, e, along the upper and lower edge ot' its face, and projectingtherefrom.

I make u spring-washer, f, having ils top and bottom edges square andparallel, or suhstnntially so, and bend it to curved forni, thecurvature being vertical, as shown. l prefer to make the washer' ontoi'spring steel. The vertical length of t le washer before bending isgrenier than the distance between the shoulders e ou the bnr B, and thebending is done to such extent that the washer will just enter with itsedges between said shoulders or ribs. The nutis then applied und screwedon tightly. During the first stage of pressure hy the nut upon thewasher the latter is prevented from turning by reason of the shoulderse. Afterwurd the shoulders e prevent the washer f from liatteniugcompletely against the bar B. The result is that the outwardly-archedwasher becomes a powerful compressed spring, loching the nutelfectually, nud fulfilling the same duty, ns to transverse strength, asn solid list washer.

The washers can be readily und cheaply manufactured, and ns they do notdepend, tor locking the nuts, upon the life of n cutting edge or point,their durability is very greet.

Il' desired,the washers f may be formed with one or more liups, g, ontheir side edges, which cnn be l'olded or bent up ngninst one or moresides of the uut and the look rendered absolutely secure.

The washer has n bearing at top und bottom against the ribs or shouldersof the splice-bar, and hence cannot latten out nor spread too far, andthis fact insures its being always ein tie and in a. condition to lockthe ont and keep it locked. Uuscrewiug the nut does not. injure it,undtherefore it may be used repeatedly.

I claim as my invention- The combination, with the splicebnr having theribs or shoulders c, ot the verticallynrched spring-washer f, henri ngat its top and bottom against said shoulders, und curved ont wardly atthe middle, and bolt and uut U, suhstontially as described.

In testimony that I claim the foregoing as my own I have hereto alxed mysignature in presence of two witnesses.

JAMES M. PERRY. Witnesses:

Wnmmn Il. PERRY, .nnss A. KENNEDY.

